Valves

Details Valves Valves

1982-04-12

1984-10-09

Schwadron, Martin P.

Static structures (e.g., buildings)

Window or window sash, sill, mullion, or glazing

Having a drain or vent

251 90, 251299, 98 98, E06B 714

Patent

active

044753241

ABSTRACT:
Valve suitable for use in a relatively narrow elongate opening to an air duct in a window frame which opening faces inwardly towards an accommodation space. The valve has at least two, preferably three, separately made, elongate members made by extrusion. A first valve body-forming member and a second holder-forming member together with a third support-forming member are adapted to be pivoted relative to each other. In the closed position of the valve the members are adapted to support each other in triangular form over a substantial part of the length dimension of the valve. The first and second members are jointed together as a pair and the third member is jointed together as a pair with the first member as well as being adapted to make a snap-forming supporting abutment against the second member.

REFERENCES:
patent: 1433769 (1922-10-01), Williams
patent: 1473774 (1923-11-01), Leech, Jr.
patent: 2025665 (1935-12-01), Dickinson
patent: 4163574 (1979-08-01), Chezem

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